/**
 * IoNetMessagingClient — HTTP-based messaging with io.net GPU cluster deployments.
 *
 * io.net workers run as containerised GPU workloads. AxonSDK containers expose:
 *
 *   GET  /health   → liveness probe (returns 200 "ok")
 *   POST /message  → deliver a payload; response body is the result
 *
 * The `processorId` for io.net is the worker endpoint URL, e.g.:
 *   https://worker.io.net/v1/<cluster-id>
 *
 * Security:
 *  - Only https:// endpoints are permitted
 *  - Private/internal IP ranges are blocked (prevents SSRF)
 *  - Response bodies are capped at 4 MiB (larger for GPU inference outputs)
 *  - Prototype-polluting keys in remote JSON payloads are rejected
 */
import type { Message } from '../../types.js';
export declare class IoNetMessagingClient {
    private messageHandlers;
    private connected;
    private apiKey;
    connect(secretKey: string): Promise<void>;
    disconnect(): void;
    send(workerEndpoint: string, payload: unknown): Promise<void>;
    onMessage(handler: (msg: Message) => void): () => void;
    isLive(workerEndpoint: string): Promise<boolean>;
    /** List available GPU clusters from the io.net API. */
    listClusters(): Promise<Array<{
        id: string;
        gpuType: string;
        available: boolean;
    }>>;
    get isConnected(): boolean;
}
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